A single-core cable of conductor radius R, has two intersheaths at radii R, and R; such...

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A single-core cable of conductor radius R, has two intersheaths at radii R, and R; such that the electrical stress varies between the same maximum and minimum in each of the three layers of dielectric. The radius of the sheath is Ry. Obtain a relationship among the four radii. A single-core cable of conductor radius R, has two intersheaths at radii R, and R; such that the electrical stress varies between the same maximum and minimum in each of the three layers of dielectric. The radius of the sheath is Ry. Obtain a relationship among the four radii.

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